The orbit of a particle moving under the influence of a central force is r0 c. the quantity c is a constant (a) determine the potential energy as a function of r. (b) calculate the angular momentum in terms of c and the total energy e.

What would the difference of spectral lines emitted by hydrogen gas in distant galaxies which is normally found at a wavelength of 21 cm on earth, be observed at 21.1 centimeters?

Curious carl calculated the density of a cube to be 4.50 g/cm3. what is the density of the cube in g/l?

Edward tolman explained the results of his study by theorizing that the rats were learning about the maze during every trial but they a. were agitated because other groups were getting reinforcement b. could not remember how to demonstrate it without reinforcement c. were not motivated to demonstrate it without reinforcement d. seemed to be too lazy to actually work without reinforcement